f110a182a6
The old stdenv adapters were subtly wrong in two ways:
- `overrideAttrs` leaked the original, unoverridden `mkDerivation`.
- `stdenv.override` would throw away any manually-set `mkDerivation`
from a stdenv reverting to the original.
Now, `mkDerivation` is controlled (nearly directly) via an argument, and
always correctly closes over the final ("self") stdenv. This means the
adapters can work entirely via `.override` without any manual `stdenv //
...`, and both those issues are fixed.
Note hashes are changed, because stdenvs no previously overridden like
`stdenvNoCC` and `crossLibcStdenv` now are. I had to add some
`dontDisableStatic = true` accordingly. The flip side however is that
since the overrides compose, we no longer need to override anything but
the default `stdenv` from which all the others are created.
178 lines
6.4 KiB
Nix
178 lines
6.4 KiB
Nix
let lib = import ../../../lib; in lib.makeOverridable (
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{ name ? "stdenv", preHook ? "", initialPath
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, # If we don't have a C compiler, we might either have `cc = null` or `cc =
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# throw ...`, but if we do have a C compiler we should definiely have `cc !=
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# null`.
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#
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# TODO(@Ericson2314): Add assert without creating infinite recursion
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hasCC ? cc != null, cc
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, shell
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, allowedRequisites ? null, extraAttrs ? {}, overrides ? (self: super: {}), config
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, # The `fetchurl' to use for downloading curl and its dependencies
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# (see all-packages.nix).
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fetchurlBoot
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, setupScript ? ./setup.sh
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, extraNativeBuildInputs ? []
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, extraBuildInputs ? []
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, __stdenvImpureHostDeps ? []
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, __extraImpureHostDeps ? []
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, stdenvSandboxProfile ? ""
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, extraSandboxProfile ? ""
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## Platform parameters
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##
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## The "build" "host" "target" terminology below comes from GNU Autotools. See
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## its documentation for more information on what those words mean. Note that
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## each should always be defined, even when not cross compiling.
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##
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## For purposes of bootstrapping, think of each stage as a "sliding window"
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## over a list of platforms. Specifically, the host platform of the previous
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## stage becomes the build platform of the current one, and likewise the
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## target platform of the previous stage becomes the host platform of the
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## current one.
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##
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, # The platform on which packages are built. Consists of `system`, a
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# string (e.g.,`i686-linux') identifying the most import attributes of the
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# build platform, and `platform` a set of other details.
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buildPlatform
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, # The platform on which packages run.
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hostPlatform
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, # The platform which build tools (especially compilers) build for in this stage,
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targetPlatform
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, # The implementation of `mkDerivation`, parameterized with the final stdenv so we can tie the knot.
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# This is convient to have as a parameter so the stdenv "adapters" work better
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mkDerivationFromStdenv ? import ./make-derivation.nix { inherit lib config; }
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}:
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let
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defaultNativeBuildInputs = extraNativeBuildInputs ++
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[ ../../build-support/setup-hooks/move-docs.sh
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../../build-support/setup-hooks/make-symlinks-relative.sh
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../../build-support/setup-hooks/compress-man-pages.sh
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../../build-support/setup-hooks/strip.sh
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../../build-support/setup-hooks/patch-shebangs.sh
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../../build-support/setup-hooks/prune-libtool-files.sh
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]
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# FIXME this on Darwin; see
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# https://github.com/NixOS/nixpkgs/commit/94d164dd7#commitcomment-22030369
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++ lib.optionals hostPlatform.isLinux [
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../../build-support/setup-hooks/audit-tmpdir.sh
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../../build-support/setup-hooks/move-systemd-user-units.sh
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]
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++ [
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../../build-support/setup-hooks/multiple-outputs.sh
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../../build-support/setup-hooks/move-sbin.sh
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../../build-support/setup-hooks/move-lib64.sh
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../../build-support/setup-hooks/set-source-date-epoch-to-latest.sh
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../../build-support/setup-hooks/reproducible-builds.sh
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# TODO use lib.optional instead
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(if hasCC then cc else null)
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];
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defaultBuildInputs = extraBuildInputs;
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# The stdenv that we are producing.
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stdenv =
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derivation (
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lib.optionalAttrs (allowedRequisites != null) {
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allowedRequisites = allowedRequisites
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++ defaultNativeBuildInputs ++ defaultBuildInputs;
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}
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// lib.optionalAttrs (config.contentAddressedByDefault or false) {
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__contentAddressed = true;
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outputHashAlgo = "sha256";
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outputHashMode = "recursive";
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}
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// {
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inherit name;
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# Nix itself uses the `system` field of a derivation to decide where to
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# build it. This is a bit confusing for cross compilation.
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inherit (buildPlatform) system;
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builder = shell;
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args = ["-e" ./builder.sh];
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setup = setupScript;
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# We pretty much never need rpaths on Darwin, since all library path references
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# are absolute unless we go out of our way to make them relative (like with CF)
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# TODO: This really wants to be in stdenv/darwin but we don't have hostPlatform
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# there (yet?) so it goes here until then.
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preHook = preHook+ lib.optionalString buildPlatform.isDarwin ''
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export NIX_DONT_SET_RPATH_FOR_BUILD=1
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'' + lib.optionalString (hostPlatform.isDarwin || (hostPlatform.parsed.kernel.execFormat != lib.systems.parse.execFormats.elf && hostPlatform.parsed.kernel.execFormat != lib.systems.parse.execFormats.macho)) ''
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export NIX_DONT_SET_RPATH=1
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export NIX_NO_SELF_RPATH=1
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'' + lib.optionalString (hostPlatform.isDarwin && hostPlatform.isMacOS) ''
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export MACOSX_DEPLOYMENT_TARGET=${hostPlatform.darwinMinVersion}
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''
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# TODO this should be uncommented, but it causes stupid mass rebuilds. I
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# think the best solution would just be to fixup linux RPATHs so we don't
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# need to set `-rpath` anywhere.
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# + lib.optionalString targetPlatform.isDarwin ''
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# export NIX_DONT_SET_RPATH_FOR_TARGET=1
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# ''
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;
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inherit initialPath shell
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defaultNativeBuildInputs defaultBuildInputs;
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}
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// lib.optionalAttrs buildPlatform.isDarwin {
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__sandboxProfile = stdenvSandboxProfile;
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__impureHostDeps = __stdenvImpureHostDeps;
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})
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// {
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meta = {
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description = "The default build environment for Unix packages in Nixpkgs";
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platforms = lib.platforms.all;
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};
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inherit buildPlatform hostPlatform targetPlatform;
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inherit extraNativeBuildInputs extraBuildInputs
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__extraImpureHostDeps extraSandboxProfile;
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# Utility flags to test the type of platform.
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inherit (hostPlatform)
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isDarwin isLinux isSunOS isCygwin isBSD isFreeBSD isOpenBSD
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isi686 isx86_32 isx86_64
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is32bit is64bit
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isAarch32 isAarch64 isMips isBigEndian;
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# Override `system` so that packages can get the system of the host
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# platform through `stdenv.system`. `system` is originally set to the
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# build platform within the derivation above so that Nix directs the build
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# to correct type of machine.
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inherit (hostPlatform) system;
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mkDerivation = mkDerivationFromStdenv stdenv;
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inherit fetchurlBoot;
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inherit overrides;
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inherit cc hasCC;
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}
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# Propagate any extra attributes. For instance, we use this to
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# "lift" packages like curl from the final stdenv for Linux to
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# all-packages.nix for that platform (meaning that it has a line
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# like curl = if stdenv ? curl then stdenv.curl else ...).
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// extraAttrs;
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in stdenv)
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